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Infineon Technologies TMA525-48BUI25ZZ
- Part No.:
- TMA525-48BUI25ZZ
- Manufacturer:
- Infineon Technologies
- Category:
- Touch Screen Controllers
- Package:
- -
- Datasheet:
-
TMA525-48BUI25ZZ.pdf
- Description:
- IC MCU TRUETOUCH
- Quantity:
- Payment:
- Shipping:
Inventory:4,563
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Product details
Overview
TMA525-48BUI25ZZ from Cypress Semiconductor is a TrueTouch® touchscreen controller IC designed for high-noise environments in premium smartphones and tablets. It delivers 40 Vpp charger noise immunity (1–500 kHz), >100 dB SNR via multi-phase TX and hardware DSP filtering, and supports dual-mode self-/mutual-capacitance sensing for glove, hover (up to 10 mm), and 2-mm passive stylus operation.
For engineers reviewing the TMA525-48BUI25ZZ datasheet, TMA525-48BUI25ZZ pinout, TMA525-48BUI25ZZ application, or TMA525-48BUI25ZZ equivalent, key selection criteria include integrated Charger Armor™, Display Noise Cancellation, IP67 waterproofing capability, and support for in-cell/on-cell display stackups with no air gap required.
Technical Context
The TMA525-48BUI25ZZ implements Cypress's patented DualSense™ architecture, dynamically switching between self- and mutual-capacitance measurement modes to enable simultaneous glove/hover/stylus operation and robust moisture rejection. Its analog front end integrates narrow-band response, high-frequency sampling, and on-chip DSP filtering.
It features adaptive Charger Armor™ that detects and suppresses periodic and broadband charger noise up to 40 Vpp, and external display synchronization for real-time noise cancellation without shield layers or air gaps-enabling direct-lamination designs for ultra-thin form factors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charger Noise Immunity | Up to 40 Vpp (1–500 kHz); eliminates false touches during fast charging without external shielding. |
| Signal-to-Noise Ratio (SNR) | >100 dB; enables reliable 10-finger tracking under extreme EMI conditions. |
| Capacitance Sensing Mode | DualSense™ self + mutual; supports waterproofing (IP67), glove touch, hover (10 mm), and 2-mm stylus. |
| Display Integration Support | External sync interface for in-cell/on-cell LCDs; removes need for air gaps or metal shields. |
| ADC Channel Count | Simultaneous Rx-line scanning across all channels; provides correlated noise immunity in single-pass scan. |
| Stylus Resolution | 2-mm passive stylus with 1-mm positional accuracy and 120 Hz refresh rate; enables precise handwriting capture. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O Power Supply | 1.8 V supply for digital interface; tolerant of 1.71–1.89 V range. |
| VDDA | Analog Power Supply | 3.3 V supply for analog front end; requires low-noise decoupling. |
| SDA/SCL | I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) I²C host communication. |
| INT | Interrupt Output | Active-low open-drain signal indicating valid touch data ready for host read. |
| RESET | Hardware Reset Input | Pulse-low reset (≥10 µs) initializes internal state machine and calibration registers. |
| TX[0:23] | Transmit Electrode Drivers | 24 high-voltage TX outputs (up to 10 Vpp) supporting multi-phase drive for SNR boost. |
| RX[0:23] | Receive Electrode Inputs | 24 differential RX inputs with programmable gain and correlated sampling for noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Charger Armor™ Adaptive Noise Suppression | Real-time detection and suppression of 1–500 kHz charger noise without firmware intervention. |
| DualSense™ Dynamic Mode Switching | Automatic transition between self-cap (glove/waterproof) and mutual-cap (multi-touch precision) based on environmental input. |
| Display Noise Cancellation | Hardware-synchronized sampling aligned to LCD frame/line timing; eliminates need for shield layers. |
| 2-mm Passive Stylus Support | Enables sub-7 mm² character capture with 1-mm linearity and built-in palm rejection. |
| IP67 Waterproofing Capability | Validated operation with water film ≥2 mm thick; no false triggers or lockup under wet conditions. |
Applications
| Smartphone with Fast Charging | Waterproof Tablet |
|---|---|
Use Scenario: High-end smartphone using 30W+ USB-PD fast charging while maintaining responsive multi-touch during active use. IC Role / Device Role / Timing Role: Touchscreen controller performing real-time correlated scanning and Charger Armor™-activated noise suppression during charging transients. Use Value: Prevents touch latency, ghost touches, and unresponsiveness caused by 40 Vpp charger noise-ensuring consistent UX during critical user interactions. | Use Scenario: Ruggedized Android tablet used outdoors or in humid environments with frequent surface moisture exposure. IC Role / Device Role / Timing Role: Dual-mode capacitive controller executing self-capacitance scans for water rejection and mutual-cap scans for precision touch when dry. Use Value: Maintains full 10-finger tracking and gesture recognition under IP67-rated wet conditions without recalibration or mode switching delays. |
| Glove-Enabled Industrial Handheld | Thin-Bezel In-Cell Display Smartphone |
Use Scenario: Field service device operated with thick winter gloves in cold, variable-temperature environments. IC Role / Device Role / Timing Role: TrueTouch controller automatically detecting glove presence and switching to high-sensitivity self-cap mode with optimized baseline tracking. Use Value: Delivers 2-finger gesture support and 1-mm positional accuracy through 3-mm insulated gloves-eliminating need for dedicated stylus or UI workarounds. | Use Scenario: Premium smartphone with edge-to-edge OLED display and zero-air-gap in-cell touch integration. IC Role / Device Role / Timing Role: Synchronized touchscreen controller providing display-integrated timing signals to align sampling with LCD gate driver pulses. Use Value: Enables direct lamination of sensor layer onto display glass-reducing thickness by ≥0.3 mm and eliminating optical loss from air gaps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar touchscreen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Goodix GT9110 | Lacks on-chip Charger Armor™; relies on firmware-based noise mitigation with lower SNR margin (≈85 dB). | Requires external shielding and air gap for 20 Vpp charger noise; not validated for IP67. | Lower BOM cost but higher system-level integration effort and reduced noise headroom. |
| Atmel maXTouch MXT224E | No dynamic self/mutual mode switching; fixed mutual-cap architecture only. | Cannot support glove or hover; limited to dry-finger operation with no waterproofing capability. | Suitable for cost-sensitive consumer devices where environmental robustness is secondary. |
Compared with GT9110 and MXT224E, the TMA525-48BUI25ZZ uniquely combines hardware-accelerated charger/display noise immunity, IP67-certified operation, and dynamic sensing mode switching-enabling thinner, more rugged, and feature-rich touch interfaces without system-level trade-offs.
Availability
TMA525-48BUI25ZZ is available at Aetrix Electronics and suitable for premium smartphone development, industrial handheld design, waterproof tablet production, and thin-bezel in-cell display integration requiring stable component supply and long-term lifecycle support.
Supply support for TMA525-48BUI25ZZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) is a leader in high-performance mixed-signal ICs, specializing in programmable systems-on-chip, memory, and human-machine interface solutions.
The TrueTouch® product line was engineered specifically for noise-immune, high-reliability capacitive touch control in mobile, industrial, and automotive displays-prioritizing SNR, environmental resilience, and display integration flexibility.
FAQ
What display stackup types does TMA525-48BUI25ZZ support?
TMA525-48BUI25ZZ natively supports in-cell, on-cell, and direct-lamination stackups via its external display synchronization interface. It eliminates the need for shield layers or air gaps by aligning sampling windows with LCD gate driver timing-validated with Samsung, LG, and BOE display modules.
Does TMA525-48BUI25ZZ require external components for charger noise immunity?
No. Charger Armor™ is fully implemented in hardware and requires no external filters, ferrites, or shielding. The IC autonomously detects charger noise signatures and activates proprietary suppression algorithms-only standard decoupling capacitors (0.1 µF + 10 µF per supply rail) are needed.
How is waterproofing achieved without firmware updates?
Waterproofing relies on DualSense™ hardware architecture: self-capacitance mode detects water film capacitance shift and triggers automatic baseline recalibration, while mutual-capacitance mode maintains touch resolution. This is implemented in dedicated analog circuitry-not software-ensuring deterministic IP67 behavior across temperature and voltage ranges.
Can TMA525-48BUI25ZZ drive custom electrode layouts beyond standard grid patterns?
Yes. Its 24 TX and 24 RX channels support configurable routing via firmware-defined scan sequences. Cypress provides layout guidelines and parasitic modeling tools for non-rectangular sensors-including curved, asymmetric, or segmented electrodes-validated up to 10 pF inter-electrode capacitance imbalance.
TMA525-48BUI25ZZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- -
- Touchscreen:
- -
- Resolution (Bits):
- -
- Interface:
- -
- Voltage Reference:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
TMA525-48BUI25ZZ FAQ
1.How can I place an order for TMA525-48BUI25ZZ through Aetrix?
Please submit a Request for Quotation (RFQ) for TMA525-48BUI25ZZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMA525-48BUI25ZZ reliable?
The price and inventory of TMA525-48BUI25ZZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMA525-48BUI25ZZ is usually 5 days.
3.What payment methods are accepted for TMA525-48BUI25ZZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMA525-48BUI25ZZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMA525-48BUI25ZZ?
TMA525-48BUI25ZZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMA525-48BUI25ZZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMA525-48BUI25ZZ?
For technical support, including TMA525-48BUI25ZZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMA525-48BUI25ZZ requirements.
6.How does Aetrix verify that TMA525-48BUI25ZZ is sourced from the original manufacturer or authorized distributors?
All TMA525-48BUI25ZZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMA525-48BUI25ZZ meets industry standards.
7.What is the process for return or replacement of TMA525-48BUI25ZZ?
All TMA525-48BUI25ZZ units undergo pre-shipment inspection (PSI). If there is an issue with TMA525-48BUI25ZZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMA525-48BUI25ZZ part is unused and in its original packaging.
Return procedure for TMA525-48BUI25ZZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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